Vibrational relaxation by electronic energy transfer and by multiphonon processes: [formula omitted] state of N 2 in rare gas crystals

Abstract

Vibrational levels v′ = 1, 2 of the A 3 ∑ u state of N 2 in Kr and Xe matrices are excited selectively using the frequency doubled and anti-Stokes-Raman shifted output of a dye laser system. Population distributions and rate constants have been derived from time resolved emission spectra. For N 2 in Xe vibrational relaxation occurs only by electronic energy transfer between N 2 molecules while in Kr also an internal multiphonon relaxation between successive vibrational levels is observed.